The water depth under the Rainbow Bridge, which spans the Niagara River Gorge between the U.S. and Canada, is approximately 175 feet (53 meters). This section of the river is part of the "Maid of the Mist" pool, located just downstream from the American and Horseshoe Falls. The depth is a result of the immense power of the falling water, which has carved out a deep basin over thousands of years. In 2026, the current in this area remains incredibly strong, averaging between 26 and 30 miles per hour, with an estimated six billion pounds of water crossing under the bridge every single minute. The bridge's deck sits about 202 feet (61 meters) above the water's surface, providing a dramatic vantage point of the deep, churning turquoise waters below. Engineers in 2026 continue to monitor the gorge walls, as the constant erosion and massive volume of water make this one of the most dynamic and powerful river sections in North America.